Interesting NO ONE has any input for me on this issue.... must be an isolated case .

 

The gearbox reset is as you are doing it but the hold period is 10 seconds.

Given that you have tweaked the car in various ways I personally would simply reset the gearbox on the first use every day - it only takes those few seconds - and see whether that cures your car''s hiccups.

 

Thanks for your advice.. will give this a shot

 

I had another thought on this - still not a fix but you mentioned the transmission learning process.


You say that when you reset the transmission the car is fine for a few days and then it starts to misbehave.


Clearly the reset is working if it gets rid of the hiccups for a period of time.


What is then happening is that the transmission is learning something over those few hiccup-free days after a reset that puts it out of synch and the hiccups return.


It will depend upon your driving style as that's what the learning ability is designed to deal with, so it seems that there's possibly [probably?] something that you do that then causes the hiccups.


As I said at the outset, this post is not a cure, more a pointer towards what the issue might be.


The other day [within the past two weeks I think] someone posted a very thorough and quite complex reset process that used VCDS. I meant to bookmark it but failed.


If anyone else knows where that post is could they please post the link?

 

Now that makes more sense than anything Ive though of yet! My wife and I will have different driving habits to be sure, and this is possibly confusing this relearn process. It sure shifts nice after I’ve done the reset...... no hiccups .. just nice smooth shifts! Doing the reset every day is not the nicest thing to have to do, surely this brain TCM could maintain its program ongoing? I would sure like to learn from doing a more stable solid even if complex relearn if you can find that for me.. Thanks so much for your interest and help.

 

FWIW, I have a new to me 2016 with a Malone Stage 2 tune and I have the yrktreg swap on the bench awaiting installation. I have the same 'jerk' shift every now and then. Seems only to happen when I'm accelerating from a stop, but in a non-smooth fashion... like when you are trying to get over a lane or something. I think it gets confused. I'm swapping and resetting the trans soon, so I'll report back if it gets better/worse, but I know exactly what you are talking about, and i don't yet have the TCM rollback installed.

posterChild

 

Exactly... let me know if you find a cure for this a annoyance

 

Still hic up ing and wishing I could relearn this Treg once for all.

 

So, no one seems to have a VCDs post on transmission relearn procedure so I've tried another version of without VCDs slightly different from what i've been doing.

1. Key to on position, no start. 2.move gear from park to drive.
3. Press accelerator all the way to floor (make sure nothing obstructs pedal),hold for 30 seconds.
4. While still holding pedal all the way to the floor move shifter back into park.
5. Let up on accelerator, turn key off.
6. Pull key out.
7. Open door, close door.

Start treg and go for a pleasant drive.... feel the smoother shifts... hope your Treg keeps it for good.